Fix print preview workflow to reflect settings of selected printer.

printing/printing_context_cairo.cc

Index: printing/printing_context_cairo.cc
diff --git a/printing/printing_context_cairo.cc b/printing/printing_context_cairo.cc
index 16eb8376c81ce09271a0a47b1a24bafa280559db..c4a7105e352f4ad55b20cb1ea99cd69dcfc022d9 100644
--- a/printing/printing_context_cairo.cc
+++ b/printing/printing_context_cairo.cc
@@ -155,6 +155,11 @@ PrintingContext::Result PrintingContextCairo::UpdatePrinterSettings(
 #else
   DCHECK(!in_print_job_);
 
+  if (!print_dialog_) {
+    print_dialog_ = create_dialog_func_(this);
+    print_dialog_->AddRefToDialog();
+  }
+
   if (!print_dialog_->UpdateSettings(job_settings, ranges))
     return OnError();